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SIM Series SIM928 ... from $1195
SIM928 Rechargeable isolated voltage source
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SIM928 Isolated Voltage Source
  • ±20 V isolated voltage source
  • Ultra-low noise output
  • Two switchable, recharging batteries
    for continuous operation
  • Battery lifetime: 1000 charge cycles
  • Output floats to ±40 V
  • Short-circuit protected
The SIM928 Isolated Voltage Source is ideal for applications where ultra-clean DC voltage is required. Voltage can be set between ±20 VDC with millivolt resolution, and the source can drive up to ±10 mA. The output circuit is optically isolated from all earth-referenced charging circuitry, providing maximum flexibility and noise immunity. The system can float to ±40 V, and the output is short-circuit protected.
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SIM928 Rechargeable Isolated Voltage Source

The SIM928 Isolated Voltage Source is ideal for applications where ultra-clean DC voltage is required. Voltage can be set between ±20 VDC with millivolt resolution, and the source can drive up to ±10 mA. The output circuit is optically isolated from all earth-referenced charging circuitry, providing maximum flexibility and noise immunity. The system can float to ±40 V, and the output is short-circuit protected.

At the heart of the SIM928 are two independent nickel-metal-hydride rechargeable batteries, each providing up to 12 hours of operation under full load conditions. When a battery is nearly depleted, the SIM928 automatically switches in a second battery. The switchover between batteries is virtually glitch-free, giving you uninterrupted power around the clock. The depleted battery is automatically charged to capacity in about 5 hours. The batteries are guaranteed for 1000 charging cycles, and SRS offers replacement battery sets.

In applications that occur over long time intervals, starting with a fully charged battery may be desirable. A battery charge override feature allows you to manually switch in the fully charged battery (assuming it is in “ready” state) at any time.

Banana binding posts are provided for the + terminal, - terminal and chassis ground.

 

 

 

 

 

 

 

Phone: (408)744-9040 • Fax: (408)744-9049 • email: info@thinkSRS.comwww.thinkSRS.com

SIM928 Rechargeable Isolated Voltage Source
Output
Output range ±20 V, 1 mV resolution
Max. output current ±10 mA
Floating output ±40 V (common mode to ground)
Noise 10 µVrms (1 kHz bandwidth)
Current limit 15 mA
Short-circuit duration indefinite
Batteries
Number of batteries 2 (1 operating, 1 charging/standby)
Type Nickel metal hydride
Charge time 5 hrs.
Discharge time 12 hrs. (10 mA load)
Lifetime >1000 charge cycles, 2 yr. shelf life
Battery switching Automatically switches batteries when active battery is fully discharged.
Switchover glitch <1 mV for <1 ms
Battery charge override Allows manual switching of batteries. Triggered when front-panel button is held for 5 seconds or more. Only armed when standby battery is in ready state.
General
Operating temperature 0 °C to 40 °C, non-condensing
Interface Serial via SIM interface
Connectors Banana binding posts (+ terminal, - terminal, and chassis ground) DB15 (male) SIM interface
Power Power supplied by the SIM900 Mainframe, or optionally by a user-provided DC power supply (-15 V, +24 V and +5 V)
Dimensions 1.5" × 3.6" × 7.0" (WHL)
Weight 3 lbs.
Warranty One year parts and labor on defects in materials and workmanship
 
 
 
Phone: (408)744-9040 • Fax: (408)744-9049 • email: info@thinkSRS.comwww.thinkSRS.com